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WebRTC Data Channels
draft-ietf-rtcweb-data-channel-12

Document type: Active Internet-Draft (rtcweb WG)
Document stream: IETF
Last updated: 2014-10-30 (latest revision 2014-09-28)
Intended RFC status: Proposed Standard
Other versions: plain text, pdf, html

IETF State: Submitted to IESG for Publication May 2014
Consensus: Yes
Document shepherd: Ted Hardie
Shepherd Write-Up: Last changed 2014-10-09

IESG State: IESG Evaluation::AD Followup
IANA Review State: IANA OK - Actions Needed
IANA Action State: None
(Has a DISCUSS. Has enough positions to pass once DISCUSS positions are resolved.)
Responsible AD: Richard Barnes
Send notices to: rtcweb-chairs@tools.ietf.org, draft-ietf-rtcweb-data-channel@tools.ietf.org

Network Working Group                                           R. Jesup
Internet-Draft                                                   Mozilla
Intended status: Standards Track                               S. Loreto
Expires: April 1, 2015                                          Ericsson
                                                               M. Tuexen
                                        Muenster Univ. of Appl. Sciences
                                                      September 28, 2014

                          WebRTC Data Channels
                 draft-ietf-rtcweb-data-channel-12.txt

Abstract

   The WebRTC framework specifies protocol support for direct
   interactive rich communication using audio, video, and data between
   two peers' web-browsers.  This document specifies the non-media data
   transport aspects of the WebRTC framework.  It provides an
   architectural overview of how the Stream Control Transmission
   Protocol (SCTP) is used in the WebRTC context as a generic transport
   service allowing WEB-browsers to exchange generic data from peer to
   peer.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 1, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

Jesup, et al.             Expires April 1, 2015                 [Page 1]
Internet-Draft            WebRTC Data Channels            September 2014

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Use Cases for Unreliable Data Channels  . . . . . . . . .   3
     3.2.  Use Cases for Reliable Data Channels  . . . . . . . . . .   4
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  SCTP over DTLS over UDP Considerations  . . . . . . . . . . .   5
   6.  The Usage of SCTP for Data Channels . . . . . . . . . . . . .   8
     6.1.  SCTP Protocol Considerations  . . . . . . . . . . . . . .   8
     6.2.  SCTP Association Management . . . . . . . . . . . . . . .   9
     6.3.  SCTP Streams  . . . . . . . . . . . . . . . . . . . . . .   9
     6.4.  Data Channel Definition . . . . . . . . . . . . . . . . .   9
     6.5.  Opening a Data Channel  . . . . . . . . . . . . . . . . .  10
     6.6.  Transferring User Data on a Data Channel  . . . . . . . .  11
     6.7.  Closing a Data Channel  . . . . . . . . . . . . . . . . .  12
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   In the WebRTC framework, communication between the parties consists
   of media (for example audio and video) and non-media data.  Media is
   sent using SRTP, and is not specified further here.  Non-media data
   is handled by using SCTP [RFC4960] encapsulated in DTLS [RFC4347].

                               +----------+
                               |   SCTP   |
                               +----------+
                               |   DTLS   |
                               +----------+

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